Question

Four identical point charges of 4micro c
each are placed at the corners of a square of each side 0.1m.
Calculate the electric field at the centre of the square.

Answer 1

Answer:

In order to estimate the frictional head loss in a pipe 1 m in diameter, through

which castor oil of specific gravity 0.96 and dynamic viscosity 9.9 poise, is to

be transported at the rate of 5000 litres per second, a test was conducted on

a pipe of diameter 50 mm using water at 15°C as the model fluid. Calculate

the discharge required for the model pipe.